20116740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{227}}^1$

素因数の和:457

約数の個数: 96

約数和(自身を含む): 64963584

約数和(自身を除く): 44846844

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 211, 227, 420, 422, 454, 633, 681, 844, 908, 1055, 1135, 1266, 1362, 1477, 1589, 2110, 2270, 2532, 2724, 2954, 3165, 3178, 3405, 4220, 4431, 4540, 4767, 5908, 6330, 6356, 6810, 7385, 7945, 8862, 9534, 12660, 13620, 14770, 15890, 17724, 19068, 22155, 23835, 29540, 31780, 44310, 47670, 47897, 88620, 95340, 95794, 143691, 191588, 239485, 287382, 335279, 478970, 574764, 670558, 718455, 957940, 1005837, 1341116, 1436910, 1676395, 2011674, 2873820, 3352790, 4023348, 5029185, 6705580, 10058370, 20116740]

約数ペア:

[(1, 20116740), (2, 10058370), (3, 6705580), (4, 5029185), (5, 4023348), (6, 3352790), (7, 2873820), (10, 2011674), (12, 1676395), (14, 1436910), (15, 1341116), (20, 1005837), (21, 957940), (28, 718455), (30, 670558), (35, 574764), (42, 478970), (60, 335279), (70, 287382), (84, 239485), (105, 191588), (140, 143691), (210, 95794), (211, 95340), (227, 88620), (420, 47897), (422, 47670), (454, 44310), (633, 31780), (681, 29540), (844, 23835), (908, 22155), (1055, 19068), (1135, 17724), (1266, 15890), (1362, 14770), (1477, 13620), (1589, 12660), (2110, 9534), (2270, 8862), (2532, 7945), (2724, 7385), (2954, 6810), (3165, 6356), (3178, 6330), (3405, 5908), (4220, 4767), (4431, 4540)]